use rand::Rng;
use std::cmp::Ordering;
use std::io;
pub struct Guess {
    value: i32,
}

impl Guess {
    pub fn new(value: i32) -> Guess {
        if value < 1 || value > 100 {
            panic!("Guess value must be between 1 and 100, got {}.", value);
        }

        Guess { value }
    }

    pub fn value(&self) -> i32 {
        self.value
    }
}
fn main() {
    println!("Guess the number!");
    let secret_number = rand::thread_rng().gen_range(1..101);
    println!("这是随机数{}", secret_number);
    loop {
        println!("Please input your guess");
        let mut bananas = 5;
        let mut guess = String::new();

        io::stdin()
            .read_line(&mut guess)
            .expect("Failed to read line");
        let guess: i32 = match guess.trim().parse() {
            Ok(num) => Guess::new(num).value,
            Err(_) => continue,
        };

        println!("You guessed: {}", guess);
        match guess.cmp(&secret_number) {
            Ordering::Less => println!("Too small"),
            Ordering::Greater => println!("Too big"),
            Ordering::Equal => {
                println!("you win");
                break;
            }
        };
    }
}
